Orbit Fit and Astrometric record for 10JK124

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 10JK124   
# Created Sun Oct 22 01:37:49 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   0.98y
# First observation: 2010/05/11
#  Last observation: 2011/05/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.023754   0.000002   0.005310   0.025110   0.000000
# Chi-squared of fit:    12.97 DOF:   24 RMS:  0.16
# Min/Max residuals:    -0.34    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.465413E-05  2.377293E-02  4.767348E-06  5.315610E-03  2.511181E-02  1.535737E-04
# Covariance matrix:
  4.2094E-13  4.0930E-12 -1.1092E-14  9.8607E-13  2.9249E-12  1.8553E-10
  4.0930E-12  1.1491E-09 -3.8428E-12  2.4255E-10  2.4610E-10  4.4928E-08
 -1.1092E-14 -3.8428E-12  1.8250E-13 -9.8846E-13 -7.9606E-13 -1.5006E-10
  9.8607E-13  2.4255E-10 -9.8846E-13  5.1690E-11  5.2686E-11  9.4938E-09
  2.9249E-12  2.4610E-10 -7.9606E-13  5.2686E-11  6.9883E-11  9.7838E-09
  1.8553E-10  4.4928E-08 -1.5006E-10  9.4938E-09  9.7838E-09  1.7588E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.468993 -118.024174    0.211273   -0.162649   -0.975108  2455327.604276
# Heliocentric elements and errors
Epoch:              2455320.5000  =  2010/05/04
Mean Anomaly:          179.99684 +/-   106.097
Argument of Peri:      143.13252 +/-   106.103
Long of Asc Node:      277.50918 +/-     0.037
Inclination:            15.53246 +/-     0.013
Eccentricity:         0.02855968 +/-    0.0024
Semi-Major Axis:     39.66504508 +/-    0.0833
Time of Perihelion: 2500943.9359 +/-   26890.9
Perihelion:          38.53222395 +/-    0.1256
Aphelion:            40.79786621 +/-    0.1288
Period (y)              249.8159 +/-      0.79
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.10157788 +/-    0.0062
Ecliptic Y          -35.44967096 +/-    0.0115
Ecliptic Z           -6.55106329 +/-    0.0022
Ecliptic XDOT         0.00223715 +/-    0.0001
Ecliptic YDOT        -0.00131055 +/-    0.0001
Ecliptic ZDOT         0.00056885 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.79786610 +/-    0.0104
Geocenter to KBO     39.82189740 +/-    0.0133
# Hcoef:  5.27

The following table shows the complete astrometric record for 10JK124. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (10JK124) followed by the observatory code and reference code for the source of the astrometry.

2010 05  11.10351  15 50 50.867  -29 49 15.54  21.1R 10JK124   304  C~0HbC      
2010 05  11.16819  15 50 50.510  -29 49 14.47        10JK124   304  C~0HbC      
2010 05  11.22324  15 50 50.208  -29 49 13.70        10JK124   304  C~0HbC      
2010 05  18.09658  15 50 12.307  -29 47 19.27  21.3R 10JK124   304  C~0HbC      
2010 05  18.20695  15 50 11.702  -29 47 17.21        10JK124   304  C~0HbC      
2010 05  18.29880  15 50 11.159  -29 47 15.61        10JK124   304  C~0HbC      
2010 05  25.13440  15 49 33.301  -29 45 08.44  20.8R 10JK124   304  C~0I3j      
2010 05  25.19253  15 49 32.963  -29 45 07.33  21.0R 10JK124   304  C~0I3j      
2010 05  25.25375  15 49 32.610  -29 45 06.32        10JK124   304  C~0I3j      
2011 05  02.16891  15 58 05.171  -29 50 26.18  21.0R 10JK124   304  C~0Wc5      
2011 05  02.24996  15 58 04.746  -29 50 25.35        10JK124   304  C~0Wc5      
2011 05  02.34591  15 58 04.238  -29 50 24.29        10JK124   304  C~0Wc5      
2011 05  05.17920  15 57 49.478  -29 49 50.00        10JK124   304  C~0Wc5      
2011 05  05.24813  15 57 49.129  -29 49 49.07        10JK124   304  C~0Wc5      
2011 05  05.32076  15 57 48.748  -29 49 48.20  20.8R 10JK124   304  C~0Wc5      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00     0.07       0.00    -0.29
  2   0.0002     -4.77     0.06       0.04    -0.20
  3   0.0003     -8.77     0.13      -0.05    -0.27
  4   0.0191   -515.16    -0.21       5.06    -0.01
  5   0.0194   -523.29    -0.02       5.37     0.17
  6   0.0197   -530.54    -0.34       5.40     0.06
  7   0.0384  -1039.33     0.22      22.32     0.30
  8   0.0386  -1043.87     0.08      22.44     0.25
  9   0.0387  -1048.58     0.01      22.42     0.03
 10   0.9749   5544.08     0.08    1105.19    -0.04
 11   0.9751   5538.50     0.09    1104.89    -0.12
 12   0.9753   5531.80     0.04    1104.61    -0.19
 13   0.9831   5336.63    -0.27    1099.71     0.03
 14   0.9833   5331.99    -0.03    1099.71     0.16
 15   0.9835   5326.96     0.08    1099.57     0.13

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

10JK124    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        39.443    40.661    39.339
ecceobj         0.034     0.151     0.046
incobj         15.564    15.522    15.572
qmin           37.895    33.658    36.860
qmax           41.769    48.616    42.503
amean          39.724    40.969    39.622
amin           39.416    40.606    39.258
amax           40.031    41.384    39.965
emean           0.023     0.152     0.038
emin            0.006     0.132     0.012
emax            0.044     0.177     0.066
imean          17.488    17.312    17.523
imin           16.314    15.863    16.167
imax           18.313    18.418    18.456
excite_mean     0.301     0.334     0.304
fracstop        1.000     1.000     1.000
cjmean          2.947     2.934     2.944

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       181.1     182.8     180.0
kozaiamp        180.0     179.8     180.0